[128.03] Stellar Populations and Kinematics of Star-forming Galaxies at z~2

We have assembled a sample of several hundred star-forming
galaxies at z~2, selected by their rest-frame UV colors
and with spectroscopically confirmed redshifts. We use UGRJK
photometry and mid-IR data from the Spitzer Space Telescope
to model their stellar populations, masses and star
formation rates. We also use near-IR H\alpha spectra of
over 100 of these galaxies to determine dynamical masses,
kinematic properties, and star formation rates.
Approximately 8% of the sample have stellar masses greater
than ~1011 M\odot, with ages of 2-3 Gyr. I
will compare the stellar masses derived from the photometric
modeling with dynamical masses from the width of the
H\alpha emission line. We also use the [NII]/H\alpha
ratio to estimate metallicity, and find a significant number
of massive galaxies with approximately solar metallicities.
The sample shows considerable diversity in mass, age and
metallicity, and intriguing differences with respect to the
Lyman break galaxies at z~3.

The author(s) of this abstract have provided an email address
for comments about the abstract:
dke@astro.caltech.edu